package Proxy_Pattern.Img;

// -*-coding:utf-8 -*-
//人员：刘陆鑫
//班级：19软3
//学号；2019110218
public class DuiBi {
    public int dui_bi(int num) {
        if (num == 1) {
            return 10;
        }
        else if (num == 2) {
            return 20;
        }
        else{
            return 999;
        }
    }
}
